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A296661 a(n) = (exp(k)*Gamma(1+n, k) - exp(-k)*Gamma(1+n, -k))/k! for k = 3. 1
0, 1, 2, 15, 60, 381, 2286, 16731, 133848, 1211193, 12111930, 133290279, 1599483348, 20793814965, 291113409510, 4366705925619, 69867294809904, 1187744054815089, 21379392986671602, 406208467134180927, 8124169342683618540 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..20.

FORMULA

a(n) = ((A053486(n) - A000023(n+1))/6.

MAPLE

A296661 := n -> (exp(3)*GAMMA(1+n, 3) - exp(-3)*GAMMA(1+n, -3))/6:

seq(simplify(A296661(n)), n=0..20);

CROSSREFS

Cf. A000023, A053486.

Sequence in context: A071237 A006470 A084169 * A000181 A047146 A084187

Adjacent sequences:  A296658 A296659 A296660 * A296662 A296663 A296664

KEYWORD

nonn

AUTHOR

Peter Luschny, Dec 18 2017

STATUS

approved

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Last modified February 21 04:22 EST 2018. Contains 299389 sequences. (Running on oeis4.)